منابع مشابه
Biological hazards of radiation.
Stevenson, Bedford, Dolphin, Purrott, Lloyd, Hill, Hill, Gumpel, Williams, Scott, Ramsey, Bruckner, and Fearn (1973) reported that high chromosome aberration yields in lymphocytes were found in those patients treated with injections of 198Au or 90Y for rheumatoid conditions ofthe knee when radioactivity had leaked along the lymphatics to the inguinal lymph nodes. This leakage and the consequent...
متن کاملBiological Dosimetry of Ionizing Radiation
A worsening of the accidental hazards linked to the use of ionizing radiation is currently being observed for four reasons. First, the increasing need for radiation sources in numerous industrial applications (food sterilization, construction, engineering...) leads to an increasing probability of loss of the sources or abnormal/unsuitable use and storage. Second, advances in medicine generate n...
متن کاملBiological Effects of Ionizing Radiation
The study of the biological effects of ionizing radiation started practically at the same time as the discovery of X-rays in 1895. Since the techniques and methods accepted today to quantify radiation dose were absent at that time, first findings and studies were barely qualitative. Nonetheless, harmful effects to man and to laboratory animal species from ionizing radiation were already observe...
متن کاملBiological Effects of Space Radiation
The radiation exposure in space missions can be reduced by appropriate measures, but it cannot be prevented. The reason is that space radiations due to their high energy deeply penetrates in matter. In comparison to the shielding thickness of the atmosphere of approximately 10 meter water equivalent, a spacecraft provides only 1-30 cm shielding depending on the equipment installed inside the sp...
متن کاملBiological Basis of Radiation Sensitivity
Improvements in radiation delivery include hyperfractionated radiotherapy (ie, smaller dose fractions delivered two or three times per day); computerized treatment planning and the use of multiple noncoplanar radiation portals (three-dimensional conformal radiotherapy) to reduce the volume of normal tissue irradiated; intensity-modulated radiation therapy, a technique designed to reduce the rad...
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ژورنال
عنوان ژورنال: African Journal of Biological Sciences
سال: 2020
ISSN: 2663-2187
DOI: 10.33472/afjbs.2.1.2020.47-54